It is good when a boss from early in the game shows up late in the game as a regular enemy
Not even "late", start using him as a regular grunt straight away in the next level.
It's good when the animation gets slightly sped up or slowed down so that hits land on beat with the background music.
for that matter the invention of conventional joystick movement in 3d games, one stick to aim and the other to move, was reviewed as wacky and unconventional and maybe even doomed when it came out but now it's truly solidified it's amazing how many games got on without it